开炉的英文：
blow-in
blow-on
run of a furnace

参考例句：

After the fire burning forty-nine days, the Lord Lao Zi thought the Great Sage must be ashes so he opened the furnace.
孙猴在八卦炉中，烧了七七四十九天，太上老君以为孙猴已化成灰烬，下命令开炉。

blow是什么意思：
v. 吹，刮；吹动；吹响；吹出；（使）爆炸；泄露；开花；吹牛
n. 重击；打击；吹动；吹牛；开花

It is blowing hard.
风刮得很大。

do not deny that is a serious blow.
我不否认那是严重的一击。

He goes for a blow.
他走出外吹吹风。

run是什么意思：
n. 奔跑，跑步；旅行；趋势
v. 跑步，奔跑；逃跑；参赛；行驶；运转；（使）流动；管理

run the rapids.
冲过急流

Run (or Hold) with the hare and hunt (or run) with the hounds
两面讨好

Hold (or Run) with the hare and run (or hunt) with the hounds
两面讨好

furnace是什么意思：
n. 火炉，熔炉；极热的地方

He was feeding coal to the furnace.
他在给炉子加煤。

I'm going to damp a furnace.
我准备封炉子了。

A furnace formerly used in glassmaking for calcination of materials into frit.
熔炉一种以前用在玻璃生产中的火炉，用于原料到玻璃质的锻烧